package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
@Slf4j
public class SetmealServiceImpl implements SetmealService {
    @Autowired
    private SetmealMapper setmealMapper;
    @Autowired
    private SetmealDishMapper setmealDishMapper;
    /**
     * 新增套餐
     * @param setmealDTO
     */
    @Override
    public void saveWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //插入套餐数据
        setmealMapper.insert(setmeal);
        // 获取套餐id
        Long id = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && setmealDishes.size() > 0){
            //插入n条套餐菜品数据
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(id);
            });
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }
    /**
     * 分页查询
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }
    /**
     * 批量删除套餐
     * @param ids
     */
    @Override
    public void deleteBatch(List<Long> ids) {
        //判断是否含有停售的套餐
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.getById(id);
            if (StatusConstant.ENABLE == setmeal.getStatus()){
                //如果含有停售的套餐，则提示用户不能删除
                throw new DeletionNotAllowedException(MessageConstant.DISH_ON_SALE);
            }
        }
        //删除套餐数据
        for (Long id : ids) {
            //删除套餐数据
            setmealMapper.deleteById(id);
            //删除套餐对应的菜品数据
            setmealDishMapper.deleteBySetmealId(id);
        }
    }
    /**
     * 起售停售套餐
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal =new Setmeal();
        setmeal.setStatus(status);
        setmeal.setId(id);
        setmealMapper.update(setmeal);
    }

    /**
     * 根据id查询套餐数据
     * @param id
     * @return
     */
    @Override
    public SetmealVO getByIdWithDish(Long id) {
        Setmeal setmeal = setmealMapper.getById(id);
        // 根据套餐id查询套餐菜品数据
        List<SetmealDish> setmealDishes = setmealDishMapper.getByIdWithDish(id);
        SetmealVO setmealVO = new SetmealVO();
        BeanUtils.copyProperties(setmeal, setmealVO);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;

    }
    /**
     * 修改套餐
     * @param setmealDTO
     */
    @Override
    public void updateWithDish(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        //修改套餐数据
        setmealMapper.update(setmeal);
        // 删除套餐对应的菜品数据
        setmealDishMapper.deleteBySetmealId(setmealDTO.getId());
        List<SetmealDish> flavors = setmealDTO.getSetmealDishes();
        if (flavors != null && flavors.size() > 0){
            //重新插入菜品数据
            flavors.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealDTO.getId());
            });
            setmealDishMapper.insertBatch(flavors);
        }
        log.info("修改套餐:{}", setmealDTO);
    }
    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }
    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }



}
